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Elm-749,642. PATENTED JAN. 12, 1904.,

T. J. SUTTON. SASH LOCK FOR WINDOWS.

APPLICATION TILED SEPT. 3,1903.

N0 MODEL.

(2 1% i f ""nnw l. /*ll f3 M5,? W? f if 1'; y m gy'muulm Jill/ENTOH A TTOHNEYS UNITED STATES Patented January 12, 1904.

THOMAS J. SUTTON, OF NEW YORK, N. Y.

SASH-LOCK FOR WINDOWS.

SPECIFICATION forming part of Letters Patent No. 749.642, dated January 12, 1904.

. Application filed September 3, 1908. Serial No. 171,712. (No model.)

To all whom it may concern:

Be it known that I, THOMAS J. SUTTON, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Sash-Locks for Windows, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide an improved sash-lock for windows, which is simple in construction and operation and comparatively inexpensive and which may be applied to window-sashes as now constructed, a further object being to provide an improved sash-lock for windows by means of which the sashes may be adjusted within certain limits, so as to provide means for ventilation; and with these and other objects in view the invention consists of the construction, combination, and arrangement of the parts hereinafter described and claimed.

This invention is an improvement on that described and claimed in United States Letters Patent granted to me October 6, 1896, No. 568,992, and the invention is fully disclosed in the .following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is a front view of a portion of a window-frame, showing also a portion of the upper and lower sashes mounted therein and my improved sash-lock in position; Fig. 2, a transverse section on the line 2 2 of Fig. 1; Fig. 3, a section on the line 3 3 of Fig. 2 and showing a modification; and Fig. 4, a plan View of a part of the upper sash and of that part of the sash-lock connected therewith, as shown in Fig. 3 on a larger scale.

In the drawings forming part of this specification I have shown at a a portion of one side of a window-frame and at b and 0 a portion of the upper and lower sashes mounted therein, and in Fig. 1 of the drawings the lower sash is shown partially raised, so as to illustrate the operation of my improved sashlock when it is desired to raise the lower sash or lower the upper one for the purpose of ventilation.

My improved sash-lock consists of two parts, one of which is secured to the sides of the upper sash and the other with the top of the lower sash. That part of the sash-lock which is secured to the upper sash consists of the plate d, in the bottom of which is a transverse opening d with which communicates the vertical slot (Z the transverse opening and the lower part of the vertical slot (JZ being shown in dotted lines in Fig. 1. That part of the sash-lock which is secured to the top of the lower sash is of the following construction: A plate 6 is secured to the lower sash by means of screws or in any desired manner, and on this plate is placed a transversely-movable bar f, the end of which adjacent to the top sash 6 is provided with a slot f through which is passed a screw or headed pin f and the front or inner end of which is provided with a slot g, at the front or inner end of which is a recess g and passed through the slot 9 is a screw or headed pin it, the head of which is adapted to fit in the recess g and the screws or headed pins f and 72 are secured in the plate 6. The bar f is provided centrally of the bottom thereof with a recess a, in which is placed a spring i and the front end of the bar f is provided with an upwardly-directed thumb and finger piece j.

In the form of construction shown in Figs. 1 and 2 that end of the bar f adjacent to the top sash is provided with a neck is and a transverse head if, and the operation of this form of construction will be readily understood from the foregoing description when taken in connection with the accompanying drawings and the following statement thereof. When the sashes are in the position shown in Fig. 2, they are locked together, but by reason of the slot d in the plate 03 the bottom sash may be slightlyraised or the top sash slightly lowered for the purpose of ventilation. When it is desired to release the lock, the sashes are both closed. This operation brings the neck k of the bar f into the transverse opening d at the lower end of the plate (Z, and by depressing the front end of the bar f and pulling outwardly thereon the said bar will be disengaged from the plate (Z, which is secured to the upper sash, and the sashes may be raised and lowered in the usual manner.

When it is desired to lock the sashes together, as shown in Fig. 2, the said sashes are closed and the bar f forced baokwardly. The barf cannot be moved in either direction without first depressing the front end thereof, and this is done by means of the thumb or thumb and finger piece g, and the thumb and finger piece 1' acts as a handle for this purpose.

The form of construction shown in Figs. 3 and 4 is the same as that shown in Figs. 1 and 2, with the exception that the plate cl is not provided with a vertical slot, but only with the transverse opening CF, and the barf is not provided with the neck It and transverse head 76 With this form of construction, however, the device will operate as a look, but the sashes cannot be adjusted or partially opened for ventilating purposes.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

A window-sash lock, comprising aplate seadapted to hold the front or inner end thereof in a raised position, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 2d day of September, 1903.

THOMAS J. SUTTON.

Witnesses:

F. A. STEWART, C. E. MULREANY. 

